Weighing apparatus



2 Sheets-s l Nov. 21, 1933. M06, SYKES WEIGHING APPARATUS Filed May 1932Ag owwowmu 5 z m x 6 H F 8i; x L Q r W J GQ Q 6 w @OWOWOWWQ Nov. 21,1933. C s K -s WEIGHING APPARATUS Filed May 21, 1952 2 Sheets-Sheet 2Patented Nov. 21, 1933 PATET QFFICE WEIGHING APPARATUS Cameron mingham,England, as

McGregor Sykes, Soho Foundry,

irsignor to W. & T. Avery Limited, Birmingham, England Application May21, 1932, Serial No. 612,686, and

in Great Britain May 39, 1931 1 Claim.

This invention has reference to improvements relating to weighingapparatus and is concerned specifically with weighing apparatus of thekind commonly employed for ascertaining the axle weight loading ofvehicles, the present invention having for its object the provision ofan improved weighing apparatus of the said kind which is simple inconstruction, efficient in operation and wherein the possibility oftipping of the weighing platform when under load is eliminated orconsiderably reduced.

The invention consists of an improved weighing apparatus of the kindreferred to wherein the weighing platform is supported on the jawed endsof asingle lever of substantially Y shape which also has connection toan automaticweight indicating mechanism the aforesaid weighing platformbeing coupled to a relatively fixed portion of the apparatus by flexurestrips or plates acting in a parallel relationship.

Theinvention further resides in the details of construction of theimproved wei hing apparatus for determining the axle welg of vehicles tobe described hereinafter.

The invention will now he described in application to the accompanyingsheets of drawings which illustrate the. invention in its appli.- cationto a weighing apparatus particularly suited for determining the axleweight loading of motor load vehicles and aircraft.

In the drawings:-

Figure 1 is a plan of the improved weighing apparatus with the weighingplatform removed.

Figure 2 is a part sectional side elevation of the apparatus illustratedin Figure 1 but drawn to a larger scale, and

Figure 3 is a part sectional end elevation of the weighing apparatusillustrated in Figure 1 drawn to the same scale as Figure 2 and lookingin the direction of the arrow indicated in Figure 1.

In the drawings like numerals of r reuse in" dicate similar parts in theseveral views.

In the embodiment of the invention illustrated in the drawings theimproved weighing comprises a base 4 having hingedly connected theretoat one end a pair oppositely inclined ramps 5 which lead to a platfoThis eighing platform 6 is bolted to the upper side of a verge or stool'7 provided wit blocks "i which rest on knife-edges 8 'ied intermediatethe ends of the jaws of a lever 9 of a substantially Y shape.

At the ends each of the jaws of the Y shaped lever 9 is provided with aknuckle carrying a (Cl. Hid-27) transversely disposed knife-edge 9 whichrests in bearing blocks carried by standards 10 bolted to the base 4.Intermediate the ends the verge or stool 'i has bolted to the upper sidethereof a pair of parallelly disposed flexible plates 11 the other endsof which are bolted to standards carby the case 4.

The verge or stool 7 has bolted to the underside thereof a further pairof parallelly disposed flexible plates 12 the other ends of which arebolted to the base l.

The pairs of flexible plates 11 and 12 are disposed parallel one anotherand the points of attachment to tie verge or stool 7 of the lower pairof plates 12 are disposed in the same vertical plane as the points ofattachment of the upper pair of plates 11.

The stem of the Y shaped lever 9 is connected to automatic weightindicating mechanism of known kind, preferably embodying a springresistant, said indicating mechanism and resistant being mounted in ahousing 13 mounted on one end. of the base 4:. The aforesaid housing 13co-operates with a second housing 14 which encloses the intermediateportion of the lever 9 and the mechanism located below the weighingplatform 6.

The automatic wei ht indicating mechanism is visible through an n. linedwindow 13 carried at the front of upper portion of the housing 13.

Bolted to the base l at the end carrying the automatic ildicatingmechanism is a handle 15 for faci tating the manipulation of theapparatus.

It is found in practice that by employing a single Y lever 9 inconjunction with fiexure strips or plates 11 and 12 acting in a parallelrelationsl p, tipping of the weighing platform when under load isavoided or eliminated.

Claim:

An improved weighing apparatus for ascertaining axle weight loading,comprising a base, a single weighing lover of a substantially Y shapefulcrur ned on base, a verge mounted on the jawed eds of the said lever,a weighing platform carried by the said verge, a pair of oppositelyinclined ramps car ie 3y the case and leading on to said platform,flexible plates acting in a para lel relationship and coupling the vergeto a relatively fix portion of the apparatus and an automatic weightindicating mechanism connected to the said lever.

CAMERON MCGREGOR SYKES.

